This comprehensive range is available at 1400, 1500 and 1600°C with four popular capacities of 2.9, 7.8, 14.8 and 35 lites (1600°C version has a maximum capacity of 37.5 litres). Powerful silicon carbide heating elements provide fast heat up rates, typically 40 minutes to 1400°C depending on the model.
Silicon carbide heating elements are ideally suited to the rigorous firing cycles often required in laboratory furnaces. These elements withstand the stresses of intermittent operation and give long life at elevated temperatures. Furnaces using these elements are designed with excess power to ensure that aging is easily corrected and heating performance is maintained. The average life of the elements may be several years, depending on operating temperatures and conditions. They are easy to replace when either hot or cold and require only the removal of the furnace back panel (the RHF 16/37 requires the removal of two side panels).
Two types of insulation are used: Hard wearing refractory brick around the doorway and in the floor to give resistance to abrasion and spillage. Lightweight ceramic fibre is used in all other areas to ensure energy efficiency and fast heating/cooling. The RHF 16/37 is insulated totally by hard wearing refractory brick.
A parallel opening door allows full and easy access to the chamber and keeps the hot face insulation away from the operator during loading/unloading.
When the door is opened, a positive action safety switch automatically isolates power supply to the heating elements to protect the operator from contact with the live heating element.
Solid state thyristor based zero voltage switching, and rapid cycle time, give smooth and reliable control and are fully compliant with European EMC legislation.
 High temperature furnaces with maximum operating temperatures of 1400 DegC, 1500 DegC & 1600 DegC
Chamber capacities of 3, 8, 15 & 35 litres
Powerful silicon carbide elements located on both sides of the chamber ensure good thermal uniformity
Silicon carbide elements can withstand the stress of everyday operation and provide good longevity
Hardwearing refractory brick in chamber entrance and hearth provide good resistance to abrasion
Elsewhere, lightweight ceramic fibre insulation is used which ensures good energy efficiency and rapid heating
Vertical counter-balanced door keeps hot door insulation away from operator
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Postive break door safety switch isolates chamber from power supply, when the door is opened
Double skinned construction allows convection air flow to cool the outer case, to conform to EN61010 safety standard
Choice of PID controller or programmers
Applications in general industry include sintering alumina, smelt trials and checking Al2O3 content in alumina
Applications in the ceramics
industry include disintegration, testing and analysis of cement
samples, refractory porosity tests, long term high temperature
temperature tests and firing & sintering of ceramic samples
Applications in the
semi-conductor industry include annealing silicon, silicon carbide
& nitride samples and solid state synthesis Models in this range: RHF 14/3
RHF 14/8
RHF 14/15
RHF 14/35
RHF 15/3
RHF 15/8
RHF 15/15
RHF 15/35
RHF 16/3
RHF 16/8
RHF 16/35
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Furnaces & Ovens
